Method of pressing steel ladder steps by rolling machine

Abstract

The invention discloses a method for a veneer reeling machine pressed-steel ladder rung. The method can improve the quality of the pressed-steel ladder rung and reduce corner angles of the pressed-steel ladder rung. The method includes the following steps that a first fixing plate and a second fixing plate are manufactured and installed on a base plate, a material plate is installed between the first fixing plate and the second fixing plate on the base plate, the position of the material plate is adjusted, an angle alpha is formed between the material plate and the base plate, then the material plate is sent into a veneer reeling machine, a bent edge of the material plate is bent for the angle alpha, the material plate is taken out, the bent edge is vertically installed between the first fixing plate and the second fixing plate, a blocking plate is added between the first fixing plate and the second fixing plate so as to enable the bent edge to be clamped through the first fixing plate and the second fixing plate, the material plate is sent into the veneer reeling machine once again to be bent for the second time to enable the bent edge to be vertical to the material plate, the material plate is taken out and serves as one end to be installed on the base plate, the steps are repeated, and thus an N-shaped pressed-steel ladder rung or a Z-shaped pressed-steel ladder rung is obtained. By the adoption of the method, labor investment can be reduced, work efficiency is improved, and production cost is saved.

Description

technical field [0001] The invention relates to a plate rolling method, in particular to a method for pressing a steel ladder step by a plate rolling machine. Background technique [0002] It is well known that industrial building steel ladders generally require a large number of production and installation on site when the main body of the project is completed to the middle and late stages. Steel ladder steps are an important part of building steel ladders. According to the needs of various construction projects, steel ladder steps generally have two types: steel grating and patterned steel. The tread of the pattern steel ladder is in the shape of "Z" or "N", and the front and rear of the step are composed of two right angles with arcs. Patterned steel ladder steps are generally formed by on-site bending after cutting from patterned steel plates. [0003] In the process of making pattern steel ladder steps, the traditional two right-angle bending and manufacturing method...

AI Technical Summary

Problems solved by technology

However, these methods have great deficiencies in terms of quality and benefit: the use of flower cutting bending, because only part of the cutting is used, resulting in no arc at right angles after the cutting part is bent, the overall bending style is not uniform, and the quality and craftsmanship are poor ;Using combined welding of steel plates, the entire step right angle has no arc after forming, and there are many edges and corners, so the quality of the steel ladder steps produced is defective; and the method of using lever knuckles or jack pressing, although generally can achieve the quality of the steel ladder steps. Requirements, but it requires a lot of manpower and labor intensity, resulting in low production efficiency

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